Just a FYI for everyone that is going to expand their hard drives. I recently bought : Hitachi Deskstar (OEM) [3.5" 1TB / 7200RPM] 32MB Cache SATA 3.0Gb/s Internal Hard Drive [MODEL# 0F10383] and installed it no problem but.... It is very loud. I tried everything in the FAQ including the HDDscan and the Hitachi tool. I noticed that Hitachi removed the AAM from the current version so I used the older. Anyway, it appears that this you cannot change the AAM on this drive. I got the message that the firmware does not support it. So if sound is a concern for you do NOT get this drive. I have it in a bedroom and it is really loud. If anyone has any ideas on other ways to change the AAM, let me know.